Is there a way to run a shell script that "calls" VIM from outside, passing parameters to it (without to open yours interface)?

Hi,
I'd like to know if someone here can help-me.

I need to store in a variable in the shell prompt the stdout of "vim -c {parameters}".
But to make it works and meet my need, the Vim must be run externally by the shell (something like "vim -c{input recognized by vim}"), passing it input parameters and the result of this output, store in a variable X.
I tried using the command vim -c 'command vim' but this did not work !

Explaining what I need is:
1) The Vim must be "called" by a script.sh and should take parameters as input to do something.
2) This parameters, will be passed to vim in variables (three variables). The variables are: $A, that contains a file name, $L that contains the number of a line of this file and $C that contains column number (the cursor position on the line $L)
3) With those data, the vim will use this input shift the cursor to the line $L at position $C of $A file.
4) Once the cursor being in the requested position, the char contained in the specified position must be copied and assigned to the variable X shell.

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